US2798891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of organic compounds by forming clathrates with werner complexes
Assignee: Union Oil Company of California
•
Filing: 1954-02-01
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Granted: 1957-07-09
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Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 William D Schaeffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:35
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07C; C07C7/00; C07C7/148; C07C7/152; C07D213/24; C07D213/28; C07D213/30; C07D213/44; C07D213/46; C07D213/50; C07D213/60; C07D213/61; C07D213/72; C07D213/73; C07D213/78; C07D213/79; C07D213/81; C07D213/82; C07D213/83; C07D213/84; C07D213/85; C07D217/00; C07D217/02; C07D217/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2578054A
Cited
US2672457A
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US2676167A
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US2681337A
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US2596344A
Cited
US2606214A
Cited
US2714586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |